Paper-bag machine.



PATENTBD APR. 16,- 1907.

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lm entbrr M; SCHENOK. PAPER BAG MACHINE.

APPLICATION FILED MAY 25, 1901.

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No.85O-,605.- v PATENTEDAPR. 16, .1907

' M. SGHENOK.

' PAPBR BAG-MACHINE. APPLICATION FILED MA? 25, 1901.

Inventor:

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PATENTED APR. 16, 1907.

M. SGHENOK. I PAPER BAG MACHINE.

APPLICATION FILED MAY 26, 1901.

' 4 SHEETS-SHEET 4.

UNITED, STATES PATENT OFFICE.

MURRAY SCHEN CK, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE UNION BAG & PAPER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented April 16, 1907.

Application filed May 25, 1901. Serial No. 61,852.

siding in the city of Cl'iicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in PapenBag Machines, of which the following is a true and exact description, reference being hadto the accompanying drawings,which form a part thereof.

My invention relates to machinery for making square bellows-folded paper bags, and has for its object to provide an improved, simple, and efficient machine for this purpose.

The nature of my improvements will be best understood as described in connection with the drawings, in which my machine is illustrated, and in which Figure 1 is a plan view of the machine; Fig. 2, a longitudinal vertical section taken on the section-line 2 2 of Fig. 1; Fig. 3, a cross-section taken on the section-line 3 3' of 2; Fig. 4, a perspective view of the tubular blank, showing the first cuts formed in it; Fig. 5, a similar view of the tubular blank, showing the second cuts formed in it and separating it into blanks fastened together by narrow tongues of paper at the lower ply. Figs. 6, 7, and 8 are perspective views show.- ing the progressive action of the devices coacting in the formation of the diamond fold.

A indicates the frame of the machine; B, the main driving-shaft, having secured to it, as shown, a handwheel B and fast and loose pulleys B B The shaft has also secured to it the cams indicated at B B and b b and also a gear-Wheel C, which through the intermediate gear (indicated at C) communicates motion to the train of gears collectively, (indicated by the symbol C and which impart motion to the various rolls and sprocketwheels of the machine in a quite usual Way,

which is sufficiently clear without being described in detail.

D D indicate guide-wheels over which the paper is brought to the former, (indicated at D,) this former being of the usual character employed in the manufacture of bellowsfolded tubes and having coacting with it the tucking-blades D D? (shown in Fig. 1) and in usual and convenient appliances for folding and pasting the paper into the tubular form. Asshown, the former D is provided with transverse slots at D for the passage of cutting-blades secured to the rolls E and E,

and which is prolonged in the shape of a tongue, (indicated at D the extreme end of the tongue being preferably slightly turned up, as indicated at (23, Fig. 6. After being formed into a tube the paper passes between the slitting-rolls, (indicated at E E,) these rolls being equipped with slitting blades, which form the longitudinal cuts in the paper (indicated at SS) and the transverse cut in the upper ply, (indicated at S*.) The longitudinal cuts are formed. by the knives E c and the transverse cut by the reciprocating knife E which (see Fig. 1) is actuated bythe lever E ivoted at E and having a camroller at its end, (indicated at E) which as the roll E revolves comes in contact with and is actuated by the cam, (indicated at 5 After passing through the slitting-rolls E the tube passes through the feed-rolls F F and thence to the slitting-rolls G G, having the transverse knives (indicated at G which form the transverse slits, (indicated in Figs. 4 and 5 at S the blanks being thereby severed with the exception of a narrowtongue connecting them at bottom, as indicated at S", Fig. 8.

To the extent above described. or indicated my machine is not substantially different from others of well-known construction.

From the rolls G G the paper isfed forward over a table, (indicated at T.) During its passage over the table each. blank has its end opened into the diamond-fold form indicated in Fig. 8 by mechanism which will be hereafter described and is then, as shown, delivered to the slitting and feed rolls, (indicated at P P,) said. rolls having a knife P and anvil 7L2, between which the narrow neck is severed, the separated blanks then being fed between rolls Q Q and on through any convenient device for applying paste to the diamond and completing the formation of the bottoms of the bags.

II II (best shown in Fig. 3) indicate longitudinal guideways formed in or secured to the framing of the machine below the table T, and working in these guideways is the table or frame which supports and partially actuates the d istending-iingers acting in the bellows fold of the blank. As shown, this table consists of a base-plate H, from which rise standards H E the two inner ones, H being connected by brace H and the table supporting at the upper end of the standards the slotted guideways, (indicated at Hi) the slots therein being indicated at its. 7 The table also supports, as shown, bearings I 11, in which the shafts L L, to be hereafter described, reciprocate, and the stud-bearings H H and t1" H lteciprocatory movement is given to the table and the parts carried thereby through connecting-rods 1 I, fastened to the rear end of the cross-bar H, the rear ends of the rods I being slotted, as indicated at 1 said slotted portion passing over the shaft B and the rods having canr rollers 1 which lie in the closed cams, (indicated at B 39",) said closed cams in this manner imparting reoiprocatory movement to the carriage. The bearings H carry the sleeves, (indicated at J,) to the outer ends of which are attached the gear-wheels, (indicated at J,) J indicating a feather extending from the inside of the sleeve J and engaging slots in the shafts L. Movement is imparted to the gear-wheels J and sleeves J through the intermediate gears (indicated at J) and actuated by the racks, (indicated at K K,) said racks being supported at their outer ends on the roller-bearings (indicated at J and turning on the stud-bearings H The racks K are given reciprocatory movement through the connecting-rods K, the ends of which are slotted, as indicated at K (see Fig. 2,) the shaft B passing through said slots and each rod K having projecting from it the cam-roller K which lies in and is acted upon by the closed cams, (indicated at B 5 It will thus be seen that the rotation or oscillation imparted to the sleeve J is a function partly of the cams B If and partly of the cams B b".

L L are shafts slotted, as indicated at Z, and having their outer ends passing through the sleeves J and engaged to turn therewith by means of the feathers J The inner ends of the shafts L have their bearings in the slides, (indicated at L,) which slides move in the guideways or slots if and have downwardly-extending pins (indicated at L projecting below said slots. Secured to the slides L are the holding-down fingers, (indicated at L and secured to the inner ends of the shaft L are the distending-fingers, (indicated at L The motions imparted to the said fingers are indicated in Figs. 6 to S, inclusive, and are of familiar character in this class of machines.

The means which I prefer to employ and illustrate in the drawings for moving bearings L, and with them the fingers, in and out of operative position are, I believe, new with me and consist of longitudinallyslotted bars M M, into the slots of which extend the pins L said slotted bars being supported on the rocklevers, (indicated at M said levers being in turn attached to the rock-shafts W M secured on the inwardlyprojecting studs shown at M M The rocklevers M are connected together, as shown,

by a link Mf, which is pivotally connected with one rock-lever above the rock-shaft M I and with a downwardly-extending arm of the other rock-lever, as clearly shown in Fig. 3. One of the rock-levers is also provided with a cam-roller, (indicated at M see ligs. 1 and 3,) said cam-roller lying in the closed cam hi secured to and turning with the shaft of the roller P, this cam imparting to the slots and fingers through the mechanism described the transverse reciprocation, by means of which the fingers are caused to move inward to engage the bellows fold, as shown in Fig. 7, or move outward to disengage said folds, as shown in Figs. 6 and 8. 1t will be observed that the distending and holding-down fingers extend over the table T when operat ing upon the blanks.

N is a shaft geared in the group of gearing C so as to be in constant rotation and carrying the sprocket-wheels, (indicated at N N,) over which and the sprocket-wheels, indicated at N and rotating on the stud-bearings N pass the flexible carriers (indicated at N*,) and to these carriers are secured the crossfold defining-plates, (indicated at N N) the active part of. said plates being connected with the carriers through the extensions N N", as clearly indicated in Fig. 3. One or more than one of the rotating plates may be used, two being shown in the machine illustrated, and while I prefer the flexible carrier as a means for moving the plates it will be obvious that they can be given rotative movement by other familiar devices.

At 0, I have indicated a cross-bar extending above the table T and having depending from it the rearwardly-extendi ng finger, (indicated at O,) said finger having preferably se .cured to its end a roller, as indicated at said roller lying immediately in front of the end (P of the finger or rod D In the operation of the machine the blanks are fed upon the table T, as indicated in Fig. 6, the upper ply of the blank being first slightly lifted by the upturned ends (Z of the rod D and then further lifted by the rearwardly extending finger O. ()ne of the plates )l is then brought in its rotation above the blank, as indicated in Fig. 6, its front end extending across and defining the transverse fold upon which the diamond is to be opened, and the holding-down and distending fingers L and L, the latter being folded back, as shown in Fig. 6, are then moved into the slightly-distended bellows folds, and the table moving forward with the plate N.. The distending-fingers L are rotated backward, as shown in Fig. 7, distending the blank, as is indicated in said figure, in a somewhat distorted manner, for while, as a matter of fact, thefront end of the diamond is brought approximately to the shape indicated in Fig. 8 I have indicated it in Fig. 7 as erected in box-like form for reasons simply connected with the illustration of the operation performed. Having performed their function, the holding-down and distending fingers are withdrawn, as indicated in Fig. 8, and, the blank moving forward over the table, with the plate N, the rear end of the diamond is pressed down by the action of the finger O or its roller 0", as clearly indicated in Fig. 8, after which the blank travels forward with the rotating plate 51 until the said plate begins to rise over the sprocket N at which time the front end of the diamond has been delivered to the feeding and slitting rolls P P.

While the particular form of my invention hereinbefore described is the best now known to me, it will be understood by those skilled in the art that changes may be made herein without departing from the spirit of my invention.

' carriage having transverse guideways formed in it on opposite sides in combination with shaft-bearings L movable in said guideways said bearings having depending pins L oscillating slotted bars M engaged with the pin L means for reciprocating the carriage 'and for oscillating said slotted bars, holding-down fingers moving with bearings L, shafts L L also moving with said bearings and having at their ends distending-fingers L and means for oscillating said shafts and lingers as described.

MURRAY SCHENCK. Witnesses:

WALTER PAGE, J AMES SI-IAUNESAY. 

